I'm not that particularly impressed when I click on a category and it flashes "No products to display" on my screen for a second before it loads in the data.
Sadly so many sites these days do the same thing, flashing a default state while the true state loads. While it's prettier and faster, so much of the web functions more poorly than it did 20 years ago.
Thanks. The site is still new, I'll fix that bug. :-)